Revamped version of the iPhone 3G with faster processing speeds. Repair of this device is similar to the 3G, and requires simple screwdrivers and prying tools. Model A1303 / 16 or 32 GB capacity / black or white plastic back.

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Phone randomly restarts after water immersion and being dried in rice

My daughter had this iPhone 3GS that got dropped in some water. She dried it in rice for 4 days and all was good. After a month or two it started restartting randomly. After it got so bad she couldn't use it for business conversations she bought a new one (ouch). She sent it to me so I could pull it apart and see if i could fix it as a backup. I took it apart and have found no sign of water damage under a 10x loop except maybe some possible corrosion on one of the vibrator motor springs but that is probably a stretch. The battery contacts are clean and I do not believe she was having battery problems. She had attributed all issues to the "water immersion" event. I see several people have posted issues about battery comparability but this is the original battery. She has had several iPhones and was prompt with the dry out procedure and I am thinking that it is possible that water never got into the phone. Any ideas, I can't take it back to the apple store as I removed the don't remove sticker

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How "apart" did you take it? Did you remove the metal shield from the motherboard, and have you removed the battery from the housing?


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brianwen, before anything else, I would replace the battery first and see what happens. It is a relative easy and inexpensive fix. Of course if you have any kind of warranty etc. take it to who covers it. It is the "random" part that leads me to believe that is where your problem is. iPhone 3GS Battery Replacement and here is the battery

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brianwen will be eternally grateful.
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